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k a June Highlights and 2025 AoPS Online Class Information
jlacosta   0
Jun 2, 2025
Congratulations to all the mathletes who competed at National MATHCOUNTS! If you missed the exciting Countdown Round, you can watch the video at this link. Are you interested in training for MATHCOUNTS or AMC 10 contests? How would you like to train for these math competitions in half the time? We have accelerated sections which meet twice per week instead of once starting on July 8th (7:30pm ET). These sections fill quickly so enroll today!

[list][*]MATHCOUNTS/AMC 8 Basics
[*]MATHCOUNTS/AMC 8 Advanced
[*]AMC 10 Problem Series[/list]
For those interested in Olympiad level training in math, computer science, physics, and chemistry, be sure to enroll in our WOOT courses before August 19th to take advantage of early bird pricing!

Summer camps are starting this month at the Virtual Campus in math and language arts that are 2 - to 4 - weeks in duration. Spaces are still available - don’t miss your chance to have a transformative summer experience. There are middle and high school competition math camps as well as Math Beasts camps that review key topics coupled with fun explorations covering areas such as graph theory (Math Beasts Camp 6), cryptography (Math Beasts Camp 7-8), and topology (Math Beasts Camp 8-9)!

Be sure to mark your calendars for the following upcoming events:
[list][*]June 5th, Thursday, 7:30pm ET: Open Discussion with Ben Kornell and Andrew Sutherland, Art of Problem Solving's incoming CEO Ben Kornell and CPO Andrew Sutherland host an Ask Me Anything-style chat. Come ask your questions and get to know our incoming CEO & CPO!
[*]June 9th, Monday, 7:30pm ET, Game Jam: Operation Shuffle!, Come join us to play our second round of Operation Shuffle! If you enjoy number sense, logic, and a healthy dose of luck, this is the game for you. No specific math background is required; all are welcome.[/list]
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0 replies
jlacosta
Jun 2, 2025
0 replies
J
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Asymptote caching problem
char0221   5
N 4 hours ago by tintin21
Summary of the problem: Asymptote caches the wrong diagram.
Page URL: Any community URL
Steps to reproduce:
1. Type the following inside asy tags:
[code]
draw(unitcircle);
[/code]
2. Preview/post the result
3. Watch as your unit circle becomes a weird triangle diagram
Expected behavior: It should display a unit circle. This is caused by caching, because comments can revert the effects.
Frequency: 100%
Operating system(s): macOS Sequoia 15.5
Browser(s), including version: Safari 18.5
Additional information:
IMAGE
5 replies
char0221
Jun 20, 2025
tintin21
4 hours ago
J
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Why Did Gamebot Spam?
PikaPika999   3
N Yesterday at 11:34 PM by peppermint_cat
So basically a few minutes ago, gamebot posted a new topic ~8 times, why did it do this? I got screenshot to prove:

Also the screenshot isn't full, it wouldn't fit in my computer screen.
3 replies
PikaPika999
Yesterday at 7:41 PM
peppermint_cat
Yesterday at 11:34 PM
J
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Nice Geo Problem that I need help with
Rice_Farmer   1
N Yesterday at 10:28 PM by lendsarctix280
In triangle $ABC,\angle{ABC}$ is obtuse. Point $D$ lies on side $AC$ such that $\angle{ABD}$ is right, and point $E$ lies on side $AC$ between $A$ and $D$ such that $BD$ bisects $\angle{EBC}.$ Find $CE$ given that $AC=35,BC=7,$ and $BE=5.$
1 reply
Rice_Farmer
Yesterday at 9:11 PM
lendsarctix280
Yesterday at 10:28 PM
J
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Square producer
TiagoCamara   0
Yesterday at 9:25 PM
If $p>3$ is a prime such that $p\equiv 3\pmod{4}$ prove that
$$\prod_{1\leq x\ne y\leq\frac{p-1}{2}}\left(x^2+y^2\right)\equiv 1\pmod{p}$$
0 replies
TiagoCamara
Yesterday at 9:25 PM
0 replies
J
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inequality
luckvoltia.112   3
N Yesterday at 7:42 PM by luckvoltia.112
$ \text{Let } a, b, c \text{ be non-negative real numbers such that } ab + bc + ca = 1. \text{ Prove that } \frac{(1 + a^2)^2}{b^2 + c^2} + \frac{(1 + b^2)^2}{c^2 + a^2} + \frac{(1 + c^2)^2}{a^2 + b^2} \geq 8. $
3 replies
luckvoltia.112
Yesterday at 2:32 PM
luckvoltia.112
Yesterday at 7:42 PM
J
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[12th PMO Qualifying Stage for Regions 1, 2, and CAR: II.19]
reilynso   2
N Yesterday at 6:36 PM by Soupboy0
Three of the roots of the equation 2x^4 + ax^2 + bx + c = 0 are -1, 2, and -3. What is b?

a) 0 b) 6 c) 8 d) -18
2 replies
reilynso
Yesterday at 1:32 PM
Soupboy0
Yesterday at 6:36 PM
J
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[Self Made Problem]
reilynso   3
N Yesterday at 4:51 PM by Rabbit47
Let a, b, and c be the roots of the equation x^3 - 2x^2 + 3x - 4 = 0.

Find 1/a² + 1/b² + 1/c².
3 replies
reilynso
Yesterday at 1:39 PM
Rabbit47
Yesterday at 4:51 PM
J
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[PMO22 Areas/II.1] Expected value of maximum
tapilyoca   3
N Yesterday at 3:42 PM by steve4916
Consider all subsets of $\{1,2,3,\dots,2018,2019\}$ containing exactly $100$ elements. From each of these subsets, take the greatest element. Find the average of all of these greatest elements.

Answer
3 replies
tapilyoca
Saturday at 3:14 PM
steve4916
Yesterday at 3:42 PM
J
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Domain of Nested Functions
pensive   1
N Yesterday at 3:35 PM by pensive
Given $f(x) = \log_2 (x) - 1$ and $g(x) = -x^2+x+2$, for what integer $x$ is $f(g(f(x)))$ positive?
Answer
1 reply
pensive
Yesterday at 3:09 PM
pensive
Yesterday at 3:35 PM
J
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Algebra equation
Math.hunter   0
Yesterday at 2:50 PM
Solve for real x, y.
(x^2 + 1)(y^2 + 1) + 4(x - 1)(y - 1) = 0
0 replies
Math.hunter
Yesterday at 2:50 PM
0 replies
J
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Quadratic Equation
EntangledElectron99   0
Yesterday at 2:11 PM
If $\alpha \ and \ \beta$ are roots of $ x^2 - 6x +2 = 0$ and $ S(n_1,n_2) = 3\alpha^{n_1} + 5\beta^{n_2} $ for
$ n_1 , n_2 \ge 2 $, then which of the following is true?[Multiple options maybe correct]

a) $ S(100,99) - 6S(99,98) + 2S(98,97) = 0 $
b)$ S(10,11) - 6S(9,10) + 2S(8,9) = 0 $
c) $ S(99,100) - 6S(98,99) + 2S(97,98) = 0 $
d) $ S(11,10) - 6S(10,9) + 2S(9,8) = 0 $

0 replies
EntangledElectron99
Yesterday at 2:11 PM
0 replies
J
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[23rd PMO Qualifying Stage: I.5]
reilynso   1
N Yesterday at 1:28 PM by reilynso
Find the sum of all k for which x^5 + kx^4 - 6x^3 - 15x^2 - 8k^3x - 12k + 21 leaves a remainder of 23 when divided by 0.

(a) -1 (b) -3/4 (c) 5/8 (d) 3/4
1 reply
reilynso
Yesterday at 1:21 PM
reilynso
Yesterday at 1:28 PM
J
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Filter by unsolved
Suntafayato   1
N Jun 21, 2025 by aidan0626
Lots of posts have many good solutions.

How to filter posts that have never been solved by anyone? A sufficient condition: posts with zero replies.
1 reply
Suntafayato
Jun 21, 2025
aidan0626
Jun 21, 2025
J
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k error in contest collection
heheman   2
N Jun 20, 2025 by jlacosta
hello friends,
in the 2023 Iran MO 3rd round contest collection, the geometry section has been mistakenly titled as Algebra. Can someone fix?
Link:
https://artofproblemsolving.com/community/c3509728_2023_iran_mo_3rd_round
Screenshot provided as attachment
2 replies
heheman
Jun 18, 2025
jlacosta
Jun 20, 2025
J
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J
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k 9 some questions
aayr   4
N Oct 31, 2022 by bpan2021
i have some questions/suggestions about this website, please do not answer unless you have reliable information

forums/posts
-most important question when a post is reported, is it reported only to the mods of that forum or to aops site admins also?
-how can you recover a deleted post on your forum?
-allten bot?
-what happens when a post is deleted? it's just archived and hidden, right?
-can admins recover previous edits of a post?
-how come you can't edit your polls?
-can you add more forums to your forum post count on your profile?

blogs
-why can't contributors edit their own posts?
-why can't people edit their comments?
-can some simple javascript be added? (just some simple onclick and if statements, would make it cooler)

i fully expect this thread to be deleted but theres a chance
4 replies
aayr
Oct 31, 2022
bpan2021
Oct 31, 2022
J
some questions
G H J
Reveal topic tags
blogs
poll
L
G H BBookmark kLocked kLocked NReply
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
aayr
2480 posts
aayr
#1 h  Oct 31, 2022, 2:34 AM • 4 Y
Y by Mango247, Mango247, Mango247, AlienGirl05
9Poll:
unrelated poll: are you right handed or left handed?
81 Votes
81%
(66)
12%
(10)
5%
(4)
1%
(1)
Hide Results Show Results
You must be signed in to vote.
i have some questions/suggestions about this website, please do not answer unless you have reliable information

forums/posts
-most important question when a post is reported, is it reported only to the mods of that forum or to aops site admins also?
-how can you recover a deleted post on your forum?
-allten bot?
-what happens when a post is deleted? it's just archived and hidden, right?
-can admins recover previous edits of a post?
-how come you can't edit your polls?
-can you add more forums to your forum post count on your profile?

blogs
-why can't contributors edit their own posts?
-why can't people edit their comments?
-can some simple javascript be added? (just some simple onclick and if statements, would make it cooler)

i fully expect this thread to be deleted but theres a chance
This post has been edited 1 time. Last edited by aayr, Oct 31, 2022, 2:38 AM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
wamofan
6814 posts
wamofan
#2 h  Oct 31, 2022, 4:10 AM
Y by
forums/post questions:
- it is reported to both mods and site admins
- you can't. only admins have that power.
- yess plz
- i believe so
- yes they can
- to avoid falsification of polls (like you make a poll then dishonestly change the options so that the poll shows something different than what people voted for)
- no

blogs
- they can if they inspect in the edit button and click on it (it allows editing in that case)
- same as above
- may interfere with javascript running the site, leading to the possibility of aopsers running commands that ruin the website (like the time many blogs were killed by users using a specific command that glitched something out)
This post has been edited 2 times. Last edited by wamofan, Oct 31, 2022, 4:12 AM
Reason: WEEEEEE
Z Y
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d.d0nut
154 posts
d.d0nut
#3 h  Oct 31, 2022, 2:26 PM
Y by
e. i dont think blog contributors can edit their own posts in blogs
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
wamofan
6814 posts
wamofan
#4 h  Oct 31, 2022, 2:27 PM
Y by
like i said before, I believe if you inspect in the edit button, with the same html tag and everything, and click on it, it will give the edit popup and allow you to submit the edited post.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
bpan2021
2688 posts
bpan2021
#5 h  Oct 31, 2022, 2:43 PM
Y by
That's an interesting trick.
Wouldn't that be considered a bug?
Z Y
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a